import org.junit.Test;

import java.util.ArrayList;
/**
 * arrayList源码分析
 * https://blog.csdn.net/u010250240/article/details/89762912
 */
public class ArrayListSourceCodeDebug {
    @Test
    public void whatDoesSizeMeans(){
         // debug capacity
        ArrayList<Integer> list = new ArrayList<>(20);
        list.add(1);
        list.add(1);
        list.add(1);
    }
}
